As the one fire has entered the world and becomes corresponding in form to every form, so the Inner Soul of all things corresponds in form to every form, and yet is outside.
— KathU 2.2.9
As the material form of fire, when latent in its source, is not perceived — and yet its subtle form is not destroyed, but may be seized again in its fuel-source — so truly both [the universal Brahmā & the individual soul] are [to be seized]in the body by means of [the meditation word] AUM. Making one's body the lower friction stick, and AUM the upper stick, practicing the drill of meditative absorption, one may see the god, hidden as it were.
— SvU 1.13-14
To that God, illumined by his own intellect, do I, desiring liberation, resort for refuge — to him without parts, without activity, tranquil, impeccable, spotless, the highest bridge to the deathless, like a fire with fuel consumed.
— SvU 6.18-19
As fire through loss of fuel grows still [extinguished] in its own source, so thought by loss of activeness grows still in its own source... For by tranquility of thought one destroys good & evil karma. With tranquil soul, stayed on the Soul, one enjoys unending ease.
— MaiU 6.34
Just as the destination of a glowing fire struck with a [blacksmith's] iron hammer, gradually growing calm, isn't known: Even so, there's no destination to describe for those who are rightly released — having crossed over the flood of sensuality's bonds — for those who've attained unwavering ease.
— Ud 8.10
Homage to you, O thoroughbred man. Homage to you, O superlative man — of whom we have no direct knowledge even by means of that with which you are absorbed.
If he stays there, O All-around Eye, unaffected for many years, right there would he be cooled & released? Would [his] consciousness become like that?
As a flame overthrown by the force of the wind goes to an end not fitting to classify, so the sage freed from naming (mental) activity goes to an end not fitting to classify.
He who has reached the end: Does he not exist, or is he for eternity free from affliction? Please, sage, declare this to me as this phenomenon has been known by you.
One who has reached the end has no criterion by which anyone would say that — for him it doesn't exist. When all phenomena are done away with, done away are all means of speaking as well.
— Sn 5.6
Consciousness without surface, without end, luminous all around: Here water, earth, fire, & wind have no footing. Here long & short, coarse & fine, fair & foul, name & form are all brought to an end. With the stopping of [sensory] consciousness, each is here brought to an end.
— DN 11
Where water, earth, fire, & wind have no footing: There the stars do not shine, the sun is not visible, the moon does not appear, darkness is not found. And when a brāhman, a sage through sagacity has known [this] for himself, then from form & formless, from pleasure & pain, he is freed.
— Ud 1.10
These two proclaimed by the one with vision nibbāna properties the one independent the one who is Such: one property, here in this life with fuel remaining from the ending of [craving], the guide to becoming and that with no fuel remaining after this life in which becomings entirely stop. Those who know this unfabricated state, their minds released through the ending of [craving], the guide to becoming, they, attaining the Teaching's core, delighting in ending, have abandoned all becomings: they, the Such.
— Iti 44
A great blazing fire unnourished grows calm and though its embers exist is said to be out: Conveying a meaning, this image is taught by the cognizant. Great Nāgas* will recognize the Nāga as taught by the Nāga as free from passion, free from aversion, free from delusion, without effluent. His body discarded, the Nāga will go totally out without effluent.
— Thag 15.2